Brush



Oct, 16, 1934. w. FRIEDMAN 1,9779183 BRUSH Filed NOV. l2. 1932 PatentedOct. 16, 1934 UNITED STATES PATENT orFlCE/ j BRUSH William Friedman',Chicago, Ill.

Application4 November 12, 1932, Serial No. 642,423

4 Claims.

The invention relates to brushes and its principal object comprises theprovision of a brush equipped with a reservoir so that a fluid iscontinuously supplied to the bristles.

"5 It is a further object of the invention to providev l It is a furtherobject of the invention to provide means for creating the pressure inthe reservoir.

1t is also an object of the invention for reguy lating the amount ofliquid supplied to the bristles l of the brush.

It is a still further object of the invention to provide certain detailsof construction and. arrangement tending to enhance the utility and yeffectiveness of a device of the character specified. '20 With these andother equally important objects in view which will become apparent froma perusal of the invention, the latter comprises the means described inthe following specieation, particularly pointed out in the claimsforming a 25 part thereof, and illustrated in the accompanying drawing,in which Fig. 1 is a top plan view of a brush constructed in accordancewith my invention, the top plan being removed to disclose interiorconstruction.

30 Fig. 2 is a section on the line 2-2 of Fig. 1.

Fig. 3 is a section on the line 3-3 of Fig. 1.

Fig. 4 is a section on the line 4-4 of Fig. 1, and

Fig. 5 is a section on the line 5--5 of Fig. 3.

Referring to the several views in the drawing A5'the brush comprises aback or body portion 10 which is encompassed on all sides except thelower side by a covering 12 of metal or other impervious materialforming a backing therefor.

The back is provided at the center with a Ollongitudinal slot 13 whichextends almost the entire length of the brush back but stops short atthe ends thereof for a purpose hereinafter explained.

At the center of the slot a nipple 14 is provided 45which has a lengthsubstantially equal to the thickness of the back 10 and is provided nearthe upper end with a circumferential liange 15 contacting with the lowerside of the covering 12. The nipple 14 has inner threads at the lower50T end to receive a threaded stud 16 upstanding from a longitudinalpipe 17 which is slightly shorter than the slot 13 and is loweredthrough the slot to assume a position along the lower side of the brushback 10 so as to be concealed within Y55- the bristles 11 as appearsfrom Fig. 2.

The pipe 17 is' provided with a plurality of apertures 18 permitting theegress at distributedpoints, of a liquid for the saturation ofthebristles, as will be hereafter further explained. The brush back 10',together with the covering 12, forms a bottom of a casing 19 and issecured thereto by a plurality of screws 20( as shown in Fig. 4. Thecasing 19 at the upper side is provided with an inner chamber 20 by apartition 21 which defines with a casing 19, a chamber 22 constituting areservoir for the reception of a liquid 23. The partition 21 merges intoa bottom 24 spaced from the covering 12, and at the center is providedwith an apertured boss 25 for the passage of a screw valve 26 whichenters a conical aperture 27 in the end wall 28 of the nipple 14. It isevident that by manipulation of the Valve 26 passage of the liquid 23into the pipe 17 may be regulated or may be entirely stopped. The bottom24 is also provided with .an apertured boss 29 in which is received ascrew 30 which, upon removal, permits filling of the reservoir chamber22. The chamber 20 is provided with a hand pump generally designated by31 for a purpose presently to be described.

As shown in Fig. 3 the partition wall 21 is thickened at the left end asviewed in Fig. 3 and is provided with an aperture 32 to receive a nipple33 to which is connected a hollow stem 34. A rubber tube 35 is placed onthe stem 34 and its other end carries a union 36 on which is mounted, inthreaded relation, a tubular casing 37, surrounding an inner tube 38 ofsimilar diameter which at the left end is provided with a piston 39 inair tight engagement with the outer tube 37 by a packing 40. The rightend of the inner tube 38 has secured thereto a knurled head 41 which, inthe retracted position of the inner tube, bears against the outer tube37. The outer tube is also provided with an opening 42 so that uponwithdrawal of the inner tube from the outer tube, when the tubes arelifted up-l wardly by reason of the flexible hose 35, air enters intothe inter-space between the inner and outer tube 38 and 37,respectively, in front of the piston 39 and upon forcing the piston intoits left terminal position the air is forced past a check valve 42 intothe chamber 22 whereby pressure is engendered in said chamber causingthe liquid to be positively discharged past the needle valve 26 into thedistributor pipe 17, and thence into the bristles.

The check valve is held against a seat 43 by a spring 44 whose other endcontacts with the end of the sleeve 45 provided in the nipple 33.

los

In use the reservoir 22 is lled after removal of the screw whereupon thescrew is put in place so that the chamber is sealed on all sides` Thevalve 26 is adjusted to permit a predetermined iiow of the liquid to thebristles, so that during the brushing operation liquid is simultaneouslyapplied to the material to be cleaned.

As conditions necessitate, the hand pump 31 is actuated by lifting itout of the chamber 20 so as to raise the pressure in the chamber 22 fora positive discharge of the liquid.

The chamber 20 is closed by a cover plate 46' which, when applied, islflush with the remainder communication between said reservoir and thebristles of said brush, and means for maintaining said reservoircontents under pressure, said means being housed within the back.

2. In combination with a brush, a reservoir on said brush having a falsechamber and constituting the back of said brush, a spray pipe secured tothe brush body, means controlled from said chamberfor establishingcommunication between said reservoir and said pipe, and means in saidchamber for maintaining said reservoir contents under pressure.

' -`v3. In combination with a brush, a reservoir on said brushconstituting the back of said brush, means for establishingcommunication between said reservoirand the bristles of said brush, andmeans movably connected to said reservoir for imparting pressurethereto, said means being `housed within the brush back.

4. In combination With a brush, a reservoir on said brush, a chamberedcover closing said reservoir, means for establishing connection betweensaid'reservoir and the bristles of said brush, and a pump in said coverchamber adapted to raise the pressure in said reservoir.

WILLIAM FRIEDMAN.

constituting the back, means for establishing

